SOLAR SYSTEM

Detailed explanation-1: -Asteroids, sometimes called minor planets, are rocky remnants left over from the early formation of our solar system about 4.6 billion years ago.

Detailed explanation-2: -dwarf planet. object that orbits the Sun; is nearly spherical in shape; and shares its orbital path with other objects of similar size.

Detailed explanation-3: -Smaller bodies like asteroids lack the mass-and thus the gravity-to pull their rocky surfaces into a spherical shape.

Detailed explanation-4: -Asteroids, without artificial gravity, have relatively little gravity in comparison to earth. Without gravity working on the human body, bones lose minerals, and bone density decreases by 1% monthly.

Detailed explanation-5: -Asteroids were not considered planets because they are too small and numerous. Likewise, comets were not considered planets because they are too small and have noncircular orbits that go far outside the plane of the solar system (location of Earth, Jupiter, Saturn, and the other “real” planets).